Improvement in valves for water-engines



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ABRAHAM COATES, OF WATERTOWN, AND GEORGE W. LASCELL, 0F SYRACUSE, NEW YORK.

Letters Patent No, 111,908, dated February 21,1871.

lMPROVEMENT lN VALVES FOR WATER-ENGINES.

The Schedulerefened to in these Letters Patent and making part oi the sama.

We, ABRAHAM Genres, of Watertown, Jefferson county, and GEORGE W. LAscELL, of Syracuse, Onondaga county, New York, have invented certain Improvements in Valves for Water-Engines, of which the following isfa specitication.

Figure l is a longitudinal, and

Figure 2 a transverse vertical section;`

, rlhis invention differs essentially from the valve for which Letters Patent, dated December 14, 1869, were issued to Abraham Coates, which Valve is constructed with parallel transverse disks at its ends, and, connecting said disks, a ti-at plate and two bars running lengthwise of the valve and parallel with each other, the induction-port of the valve being the opening along its side between the two bars, and the eduction-.ports being the openings along its side between the bars and the flat plate.

The object oi' 4this invention is to locate the induction-port of the valve at one end, in one of the afore` said transverse disks, where the por-t may communiv cate with an orifice formed lengthwise oi' one of the trunnions ofthe valve-chest, this being a more convenient Way of introducing water than to form an orifice in the side of the valve-chest,and, moreover, enabling the valve to be constructed so, as to, better resist the pressure to which it is subject from the water it receives,

, Referring to the drawingat a are the transverse disks at the end of the valve, which disks are large enough to iit closely the interior of the valvefchest b.

c is the fiat plate that connects the disks a. v f d is the hollowtrunuiou ofthe valve-chest, through which water is admitted to its interior.

e is the transverse opening in the disk c, that forms the induction-portof the valve.

f is a plate, curved in cross-section, convex outside and concave inside, and flush With the V perimeters of the disks, which, it connects, being itself parallel with the plate c, openings g being left between the plates.

c and f, at each side, large enough to form the eduction-ports of the valve.

The Coates valve, above referred to, has' no part corresponding more nearly to the plate f than the two parallel hars placed at an interval from each other,

the o'ice of which is to take upon themselves a por-5 Accordingly, an orifice, i, is made through the disk w,

by which the water gains access to the back of the disk and thus balances it.

A packing, h, is placed around th-e base of the valvestem k to prevent leakage through the orifice by which the stern passes through the head of the valve-chest. It', however, leakage notwithstanding occurs, the ori-v ce t maybe plugged up, thus causing the disk to be pressed against the packing, the force of which' pressure may be regulated by a setfscretv, l', passing through an arm, m, that extends front the head of thevalve` chest, said setsereiv bearing on the end of the valvestem.

We claim. as our invention-- The arrangement of the disk a having the transverse opening e that forms the induction-port, the disk a having the transverse orifice i', the fiat plate c, and. the concave-.convex plate f, as described.

ABRM. COA'ES` GEO.. W. LASGELL..

Witnesses JOHN Hasn,

S. FLOYD. Hosen.v 

